Sign in Join

Live chat for Free Pascal, Lazarus, Delphi and every Pascal programmer.

Catalog

30,062 projects in the catalog.

Free Pascal, Lazarus and Delphi components, libraries and programs from GitHub, SourceForge, Codeberg, GitLab and more. Rate them, mark what looks interesting, and talk about them on their benches.

Random project How the catalog works

InterpolateProject

The desktop Win32 application performs the interpolation of the given function by using interpolation polynomials of Lagrange or Newton (I or II form)

  • Archived
  • Application
  • GitHub
  • ★ 1

Science

ImageInterpolation

High quality, pure pascal image interpolation (resizing/scaling) using TBitmap (VCL/FMX)

  • Quiet
  • Library
  • Delphi
  • GitHub
  • ★ 12
  • MPL-2.0

Graphics

TrueBSplineInterpolation

Uniform B-Spline Interpolation passes through all data points.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 1
  • MIT

Other

dotenv-fp

A feature-rich dotenv library for Free Pascal: load environment variables from .env files with type-safe getters, validation, interpolation, and zero memory management.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 15
  • MIT

System

spatial-processing

Interactive programs showing spatial transforms (Otsu, blur, affine, etc.) and consequences of interpolation.

  • Quiet
  • Other
  • Lazarus
  • GitHub
  • ★ 2
  • BSD-2-Clause

Graphics

ALGLIB

. Delphi FPC Cross-platform numerical analysis and data processing library. It supports several operating systems Windows and POSIX, including Linux. ALGLIB features include: Data analysis classification/regression, statistics; Optimization and nonlinear solvers; Interpolation and linear/nonlinear least-squares fitting; Linear algebra direct algorithms, EVD/SVD, direct and iterative linear solvers; Fast Fourier Transform and many other algorithms.

  • Library
  • Lazarus and Delphi

Science

awesome-pascal

A curated list of awesome Delphi/FreePascal/(any)Pascal frameworks, libraries, resources, and shiny things. Inspired by awesome-... stuff. Open source and freeware only!

  • Active
  • Other
  • Lazarus and Delphi
  • GitHub
  • ★ 2,096
  • CC0-1.0

Learning and Examples

Alcinoe

Alcinoe empowers developers to build fast, modern apps without the usual complexity or performance bottlenecks. It keeps the focus on innovation—not tool constraints—delivering top performance, deep customization, and great cross-platform UX while staying independent of GAFA ecosystems.

  • Active
  • Package
  • Delphi
  • GitHub
  • ★ 1,134
  • Apache-2.0

Other

neural-api

CAI NEURAL API - Pascal based deep learning neural network API optimized for AVX, AVX2 and AVX512 instruction sets plus OpenCL capable devices including AMD, Intel and NVIDIA.

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 465
  • LGPL-2.1

Science

mb3d

Mandelbulb3D

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 204
  • LGPL-2.1

Graphics

FreeEsVclComponents

Free ErrorSoft Components for Delphi (VCL) & EsVclCore lib

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 190

Other

Free-Color-Picker

An advanced color picker, screen magnifier and color palette manager. Windows 32 & 64-bit

  • Quiet
  • Application
  • Delphi
  • GitHub
  • ★ 114

Graphics

dexed

Re-upload of Basile B's nearly-lost D language IDE, with some level of further active development intended.

  • Archived
  • Application
  • Lazarus
  • GitHub
  • ★ 21
  • BSL-1.0

Language Tools

QE-SSP

This repository contains example codes for the book: Quantum ESPRESSO Course for Solid‑State Physics, Jenny Stanford Publishing, New York, 372 Pages (2022) by N. T. Hung, A. R. T. Nugraha and R. Saito.

  • Active
  • Other
  • GitHub
  • ★ 98

Science Learning and Examples

zx-skiacomponents

An open-source set of Delphi components for the FireMonkey framework that utilize the Skia4Delphi library.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 52
  • MIT

Graphics

DotEnv4Delphi

A library to use .env files in Delphi and Lazarus (FreePascal). Also to be able to use Environment variables in a simpler way

  • Active
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 48
  • MIT

System

BZScene

BZScene Multimedia 2D, 3D, Audio library for Lazarus and FPC / BZScene Bibliothèque multimédia 2D, 3D, Audio pour Lazarus et FPC

  • Quiet
  • Package
  • Lazarus
  • GitHub
  • ★ 24

Multimedia Graphics

PostProcessors

Post processors for grblHAL and Grbl

  • Active
  • Other
  • GitHub
  • ★ 20

Other

SedaiAudio

Sedai Audio Foundation - Professional audio synthesis library in Free Pascal. 5 Synthesis Engines: Classic/Subtractive, FM (DX7-style), Wavetable, Additive, SID Evo.

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 16
  • GPL-3.0

Multimedia

mustapas

Mustache implementation in simple procedural Pascal

  • Quiet
  • Library
  • GitHub
  • ★ 15
  • MIT

Language Tools

ft

A widget toolkit?

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 12
  • MPL-2.0

GUI containers

LUX

luxidea 製の汎用ライブラリ。

  • Active
  • Library
  • GitHub
  • ★ 12

Other

mathlib-fp

Scientific, statistical and engineering mathematics for Free Pascal, with no third-party runtime dependencies.

  • Active
  • Package
  • Lazarus
  • GitHub
  • ★ 12
  • MIT

Science

sun-simulator

Little tool to set the monitor brightness/gamma/color according to the time and date

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 12

System

AstrobloQ

AI Fermi Paradox Simulator

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 10
  • MPL-2.0

Science

Markup

Markup, a specialized authoring language for creating semantic HTML with one consistent syntax. It replaces manual HTML coding with a streamlined, Turing-complete system that supports variables, logic, and reusable components. Delivered as a compiled DLL, it includes JSON binding, semantic analysis, and customizable rendering

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 10

Language Tools

WebSofa

JavaScript port of PasSofa

  • Quiet
  • Library
  • GitHub
  • ★ 10
  • MIT

Science

2D-rasterizer

Basic triangle software rasterizer with texture mapping

  • Quiet
  • Other
  • GitHub
  • ★ 9

Graphics

jpmMath

Math routines by Jean-Pierre Moreau

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 9

Science

it2play-pas

IT/S3M tracker module replay in native Free Pascal

  • Active
  • Library
  • Lazarus
  • GitHub
  • ★ 8
  • BSD-3-Clause

Multimedia

spritesheet-utility

Create spritesheet and view animations. Flip and resize images. Built with Lazarus and Castle Game Engine.

  • Quiet
  • Application
  • Lazarus
  • GitHub
  • ★ 7
  • GPL-2.0

Graphics

pascaladt

A library of algorithms and data structures for the Free Pascal Compiler.

  • Quiet
  • Library
  • Lazarus
  • GitHub
  • ★ 6
  • LGPL-2.1

Other

Splash

Automated Splash screen that keeps alive and autolearns progressbar speed

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 6

Indicators and Gauges

wisteria

藤 -Resizer- / 画像の最高品質な拡大縮小を高速かつ一括で行う

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 6
  • MIT

Graphics

mb3d-lazarus

Lazarus and Free Pascal port of Mandelbulb3D for creating and rendering three-dimensional fractal art.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 5
  • LGPL-2.1

Graphics

moon2d

A 2D platformer written in Delphi in 2008, rebuilt from scratch on modern Delphi + SDL2 eighteen years later. Same game, same arithmetic.

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 5
  • MIT

Games and Game Engines

GEO-COMMANDER

GEO Commander - Ensemble de commande ecrit en Pascal (Turbo Pascal ou Free Pascal) d'aide à la géographie.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 4
  • MIT

Applications

CloneDRAW

Suite de programme de dessin en Pascal (Turbo Pascal/Free Pascal)

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 3
  • MIT

Graphics

frxviewer

FRXViewer Plugin for VB Decompiler

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 3

Applications

GranularSynth

Free granular + FM synthesizer (VST2/VST3) for Windows, 32/64 bit · Granular- und FM-Synthesizer für Windows

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 3
  • GPL-3.0

Multimedia

PascalAI

PascalAI — AI-native Pascal language compiler (Lape VM backend)

  • Active
  • Application
  • Delphi
  • GitHub
  • ★ 3
  • MIT

Language Tools

PasSofa

Object Pascal implementation for reading SOFA files

  • Quiet
  • Library
  • Lazarus and Delphi
  • GitHub
  • ★ 3
  • Apache-2.0

Science

trimair

  • Active
  • Other
  • Delphi
  • GitHub
  • ★ 3

Other

aggpasmod_old

Modernized Pascal Anti-Grain Geometry

  • Quiet
  • Package
  • Lazarus
  • GitHub
  • ★ 2

Graphics

Foreval

Foreval is parser, compiler and evaluator of mathematical expressions in run-time with support complex numbers. After parsing and building tree of expression is perform optimization and compiling into x86-32 instructions and returns address of compiled expression. For expressions can by finding derivatives by symbolic or numerical differentiation.

  • Active
  • Library
  • Delphi
  • GitHub
  • ★ 2
  • MIT

Science

PasClaude

A terminal coding agent for Windows, written in Free Pascal. No dependencies beyond the FPC RTL.

  • Active
  • Application
  • Lazarus
  • GitHub
  • ★ 2
  • MIT

Applications